Variable-speed universal hydraulic transmission apparatus.



C. RADIGUER.

VARIABLE SPEED UNIVERSAL HYDRAULIC TRANSMISSION APPARATUS.

APPLICATION FILED 05c. 19, 1913.

1 9 l 1 1 5?". Patented Nov. 23, 1915.

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C. RADIGUER. v VARIABLE SPEED UNIVERSAL HYDRAULIC TRANSMISSIOYN APPARATUS.

APPLICATION FILED DEC-19.1913.

Patented Nov. 23, 1915.

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C. RADIGUER.

VARIABLE SPEED UNIVERSAL HYDRAULIC TRANSMISSION APPARATUS.

7 APPLICATION FILED DEC. 19. 1913. LWLW'W Patented Nov. 23, 1915.

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COLUMBIA PLANOCIRAPH GIL-WASHINGTON. n. c.

C. RADIGUER.

VARIABLE SPEED UNIVERSAL HYDRAULIC TRANSMISSION APPARATUS.

APPLICATION FILED 050.19.1913.

Patented Nov. 23, 1915.

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CHARLES RADIGU'ER, OF ST.-DE1\TIS, FRANCE, ASSIGNQR TO SOCIETE ANONYME DES ETABLISSEMENTS DELAUNAY-BELLEVILLE, 0F ST.-DENIS, FRANCE, A CORPORA- TION OF FRANCE.

Specification of Letters Patent.

Patented Nov. 23, 1915.

Application filed December 19, 1913. Serial No. 807,793.

To all "whom it may concern:

Be 1t known that I, CHARLES RADIGUTJR,

citizen of the French Republic, residing at St-Denis, Department of the Seine in France, have invented certain new and useful Improvements in Variable-Speed Universal Hydraulic Transmission Apparatus; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to controlling devices for variable speedtransmission mechanism, and particularly to controlling devices for hydraulic transmission mechanism of the Janney type. In this type of hydraulic transmission mechanisnnthe speed and direction of rotation of the driven shaft is controlled by means of a tilting box the inclination of which determines the speed and direction of rotation of the driven shaft. This tilting box is acted upon by.

a rotatable rod, in the present instance, termed the controlling rod.

It is the object of the present invention to provide mechanical means for actuating the above-mentioned controlling rod, said means being capable of deriving power from the transmission mechanism itself and, therefore, capable of power actuation. A controlling means having these characteristics is disclosed in my co-pending application, Serial No. 798,08, filed October 29, 1913, but the present invention differs from that disclosed in said co-pending application in the specific construction of the means for moving the actuated part of the controlling device into and out of operative relation with the corresponding actuating part of the transmission mechanism. In the pending application above referred to, this is accom plished by means of an oscillating lever, but this is not practical in cases where it is de sired to control the operation of the transmissionmechanism from some point remote from the transmission mechanism. In the present instance, the oscillating lever above referred to is replaced by a system of rotary elements consisting of rotary gears and shafts, which will hereinafter be more fully described.

Another obiect of the inventionis to pro vlde means for rendering the controlhng,

means operable by hand, so that the tilting box may be actuated by hand when so desired to'eifect change in speed or change in the direction of rotation of the driven shaft of the transmission mechanism.

The invention is illustrated in the accompan ing drawings. in Which:

Figure 1 is a side elevation, partly in section, of a portion of a hydraulic transmission mechanism having the improved controlling means apulied thereto, the section. bemg taken on the line X-X of Fig. 2; Fig.

2 is an end elevation, part1 in section, of the construction shown in Fig. 1, the secti on being taken on the line YY of Fig. 1; Fig. 3 is a detail view showing the lrev emploved when it is desired to actuate the controlling means by hand: Fig. 4 is a side elevation. partly in section, of a modified form of controlling means. the section being taken on line ZZ of Fig. 5: Fig. 5 is an end elevation of the construction shown in Fig. 4; Fig. 6 is a side elevation, partlv in section, of still another form of controlling means. the section be ng taken on the line XX of 1* i9. 7: and Fig. 7 is a top plan View of the const uction shown in Fig. 6.

' Referring to the drawings. and particularly to Figs. 1 and 2. the controlling rod V for actuating the tilting box above referred to. carries a ear H which meshes with acninion G. which. in turn. is fixedlv carried bv an auxiliary rod or stub-shaft G.

The stulrshaft G is verticallv d s osed and is rotatably mounted in a bracket E carried bv the ca sing of the transmission mechanism. Keyed upon the stub-shaft G is a fr ction member M having two suaced friction disks. between which. a friction roller D operates. The said friction roller D is dis osed in a nlane substantially at righ an les to the di ks of the friction member M. and is normallv out of cont ct with both of the same. The fricti n ro ler D is power-driven from the shaft A of the transmission mechanism b means of a train of gearing F F F From the construction so far described. it is obvious that if the friction member M be mo ed in either direction axially of the stub-shaft G. one or the other of the friction disks of the member M will come in contact with the friction roller D and will be rotated by the latter. the direction of rotation depending upon which screw N with the sleeve E.' ,'I he*if iiitioii' g1 member-Main, eherefore',"te directly; r6

friction disk is brought into contact with the friction roller In either direction of rotation of the member M, the stub-shaft G will be rotated, and thereby rotate the controlling rod V through the intermediary of the gears G and H. The construction so far described is substantially the same as that disclosed in the co-pending application above referred to, except that in said application the friction member' M'is mounted directly onthe controlling rod V and the gearing G, is dispensed with. The means for moving the friction member 'M axially of the stub-shaft G, in the present instance, differs from that disclosed the co-pending application irf that, in 'the present instance, a handle P is provided, when actuated, rotates thrbugh the intermediary of the'beveledge'ars P and P, a rotatable sleeve E carriedby a portion of the bracket E, as will. 'b'e-elearfrtm an inspection of i "Fig. 1.

Theslee've E i's'internal'ly threfldfitl to receive the threads; ofasrew N rigidly carried'by the friction memb'erM, When the, sleeve E. is rotatedb'y handle P, ,the-

relative rotation between the sleeveE and thescrew N will cause a long tud nal movement of the screw Nin the sleeve E, which will result iri'the bringing of one of the fflcf tion disks ofthe member M into contact with" the friction" roller D, The friction member M". will than be power drivn and will effect" thedesired teena r the controlling rodV. It will be noted, however,

that if'the handle; r is move an then Stlbsequently held stationary, the rotation of the friction member by the roller ,1) will y l cause, the screw N to turn n the sleeve E,

which will effect an axial movemen s]? the. member M back to' 'its original position. I will,,,therefore, be seen that as long as pres-s member M will be drivenby the roller D,"

P is discontinued, the rotation of thejs'crew sponding to the sleeve E of the form above described, in addition to having a threaded portion for receiving the screw N, has a further threaded portion for receiving a second screw G which isrotatably mounted in the bracket E. The handle P is directly connected with the screw G The rotation of theiscrew G by the handle P will cause longitudinal movement of the sleeve E, the latter being held against rotation by means of a screw H, so set that its extremity will engage in a slot H provided in the side of the sleeve E. This longitudinal movement ofthe sleeve E will effect movement of the friction member M axially of the controlling rod V to bring one or the other of the frictiondisks into engagement with the power-actuated friction roller D. When the rotation of the handle P is discontinued, the continued rotation of the friction memberM will rotate the screw N in the sleeve E", and, therefore, the friction member M will be restored to its original position. As will be noted from Fig. 4, the pitch of the threads of the screws N and G need not be the same, as the threads on the latter screw may have a much greater pitch than those ion the screw N. hen it is desired to actulate the controlling rod V by manual means, the two screws N and G are locked to the sleeve E by means of two keys similar to that shown in Fig. 3, which are inserted through openings in the sleeve E and cor- K H v ,responding openings R provided in the sure; is exerted on the handle P, the friction! screws N and G The screw H is then .and rotation of the handle P will then eiiect rotation of the friction member M without tproducing axial movement thereof. The

p twithdrawn from engagement in the slot H but that as soon as the rotation of the handlel the c orlitrolliiig grod V manually iiis'tead of;

movementofjthe friction member lVIand rerl f controlling rod V is, therefore, directly and store the lattertdits original position, Ittfmanually operated from the handle P.

maysoiiietimes fbe desirable refs-curate the: In the modification shown in Figs. 6 and controllingmeansby hand, thatis wants! 7, the friction roller 2 is actuated and cart ower derived from the A transmission,

mechanism. For this purpose, a key-way; R

is provided, a pfortion ofwhich is formed gj'mechanism. A packing (3 surrounds the in the sleeve'E', andtheotherplorti'oii ilitlieh'; top emitters-w N, as clearly shown in Figll --1, torec'eijve a key K; illustrated]inZFigISJ Whenthis key 151 inserted, the sleeve E s 1ocked, toth screw-N and rotati'oii' of 'thel i; I handle" P' will then, cause rotation ,of" the Mn order to permit adjustment of the shaft 1 dried bya shaft 1 carrying a worm wheel 3 meshing with a corresponding worm wheel 4 ,carried by the shaft 5 of the transmission shaft 1 and is rendered accessible by means of an opening 7 provided in the bracket-like casing 8, hereinafter referred to. A key 9 is provided for tightening the packing and may remain in the position shown in Fig. 6.

S p a 1 N W tlnfeaded ei gageinentwiththe casing 10, as thtlirE;thefrictioiifnniberM will mainstay-shown in" thedrawing and carries a hexagonal nut 11 by which the cap 11 may be turned by means of a Wrench or similar tool. WVhen so turned, the cap 11 adjusts the shaft 1 longitudinally. A lockingring 12 is provided having an opening for receiving the threaded hub portion of the cap 12. To adjust the shaft 1, it is only necessary to remove the cap 12, and then access may be had to the hexagonal nut 11. In the form of the device now being described, the friction roller 2 is made conical in shape and the friction disks 13 and 14, correspondin to the friction disks of the member M in Figs. 1 to 5, inclusive, are each accordingly conical shaped for proper cooperation with the friction roller 2. The friction disks 13 and 14 are unitarily carried by the flange 15 of a sleeve 15 loosely mounted on a shaft 19. The flan "e 15 has rigidly secured thereto, a pinion 17 which is internally threaded to receive the threads of the screw formed on the shaft 19. The pinion 17 meshes With a gear 18 (Fig. 7), which is connected with the controlling rod of the transmission mechanism; The shaft 19 is rotatably mounted at one end in the cross members 19 located in the box-like portion 16 ofthe casing 8. The other end of the shaft 19 is rotatably supported on the casing by means of a ball-bearing 19", and carries at its extreme end portion a beveled pinion 21 mesh ing with a beveled gear 22, .which latter is secured to a shaft 23 extending to the point from which it is desired to control the transmission mechanism. A hand-wheel 24 is provided on the shaft 23 at such point as to render the same capable of rotation by hand. By the construction so far described, it is obvious that when the hand-wheel 24 is rotated, the shaft 19 will be rotated and the relative rotation between the screw 20 and the pinion 17 will cause an axial movement of the friction disks 13 and 14 to bring one or the other into contact with the friction roller 2. When movement of the hanle 24 is discontinued, the further rotation of the disks 13 and 14, by the friction roller 2, will restore the disks 13 and 14 to their normal position, as the pinion 17 will then rotate relative to the screw 20 and shift the disks 13 and 14 axially back to their original position. During the rotation of the disks 13 and 14 and the pinion 17, the controlling rod is actuated by means of the gear 18 meshing with the pinion 17. In order to render this form of controlling means manually operable, a clutch sleeve 25 is provided on the shaft 19, which sleeve carries clutch teeth 25 for cooperation with corresponding teeth 17 provided on the pinion 17. The clutch sleeve 25 is keyed to the shaft 19 and may be actuated longitudinally of the shaft 19 by means of a rock lever 26 having a forked extremity 27 engaging the sleeve 25, in the well-known manner. The rock lever 26 may be actuated by a longitudinally movable link 28 connected to a bellcrank lever 29, which, in turn, is actuated by means of a rod 30 passing to the station from which the transmission mechanism is con trolled. Actuation of the clutch sleeve 25 to engage the teeth 17 and 25 Will first move the disks 13 and 14 to their true intermediate position, due to the inclination of the opposite sides of the teeth 17 and 25, respectively. When the teeth 17 and 25 are so engaged, rotation of the hand-wheel 24 will serve to rotate the pinion 17 as Well as the screw 20, and there will, therefore, be no relative rotation between the screw 20 and the pinion 17. No axial movement of the disks 1'3 and 14 will take place, but the rotation of the pinion 17 will serve to actuate the controlling rod through the intermediary of the gear 18. In order to positively stop rotation of the hand-wheel 24 when the tilting-box has been inclined its maximum amount, the shaft 19 carries two clutch members and 26 rigidly secured thereto. Between these clutch members, the shaft carries a threaded portion 32 passing through the interiorly threaded hub portion of the longitudinally movable nut 33. The said nut is provided with oppositely disposed projections which engage in slots provided in the casing 34, and, therefore, its rotation with the shaft 19 is prevented. As shaft 19 rotates, it isobvious that the nut 33 will be moved longitudinally; In the normal position of the parts, the nut 33 will be disposed midway between the clutch members 35 and 36. Rotation of the handle 24 a sufficient distance will cause movement of the nut 33 in one direction or the other until the clutch teeth 33 carried thereby will engage with the corresponding teethon either the clutch member 35 or 36. The rotation of the handwheel 24 and the shaft 19 will then be positively stopped, and the continued rotation of the disks 13 and 14, by the roller 2 will shift the said disks 13 and 14 back to their intermediate position, in the manner above described, in which position both of the disks will be out of engagement with the roller 2, and the tilting-box will, therefore, re main in the position into which it has been brought.

The last described modification of the apparatus possesses certain advantages not tant point, and the device for rendering the controlling means capable of manual operation may also be brought into operation from such distant point.

Obviously, numerous modifications and changes may be made in the details of the I construction, as above described, without departing from the spirit or sco e of theinrelation, as defined in the accompanying claims;

VlThat I claim is: 7

1. In a variable speed hydraulic transmission mechanism, a rotatable controlling rod, an actuated friction member designed to rotate said rodand con niirising two spaced frictiond'isks connected to rotate'iin unison, an actuating friction wheel disposed between saiddisks and'normally out of engagement with both of thesame, means to rotate said friction" wheel, and means comprising a' plurality of rotatable elements 'to shift said disks into and'o'ut of operative engagement with said friction wheel.

2. In a variable speed'hydraulic transmission mechanism, a rotatable'controlling rod, an actuated friction member designed torotate' sai'd rod and comprising two spaced friction disks connectedtorotate in unison, an'actuating friction wheel disposed between said' disks and'normally out of "engagement with both'of the same, meansto rotate said friction'wheel, and mea'ns comprising a rotatable handle toshiftsaid' disks intoi and out of operativerelation with said friction wheel.

3. Ina variable speed hydraulic transmlssionmechanism, a'rotatable controlllng rod,

a friction wheel, mea ns to 'rotate the same,

an axially movable friction member designed to rotatesa d controlllng' rod' and having two spaced "friction disks between means to movesaid' friction memberv axially to' brihg ei ther of said'disks into engage ment with said friction wheel comprising an internally threaded sleeve, a threaded shaft Copiesof' this patent may be obtained for which said friction wheel is, positioned, and

slon mechan1sm ,a rotatable controlling rod, apower-actuat'ed frictlon wheel, a friction member cooperating therewith designed to rotate 'sai;1 controlling rod and comprising two, spaced friction disks either of which is-designed to'be brought into engagement with'thefriction wheel by axial movements of said friction member, and means to produce axial movements of said friction member'comprising a threaded portion associated with said member, a rotatable element hav ing a threaded portion to receive the thread-- ed' portion ofsaid friction member, and means torotate said element.

5. In a varable speed hydraulic transmission mechanism, a rotatable controlling rod, a power-actuated"friction wheel, a friction member cooperating; therewith designed to rotate said controlling rod and comprising two" spaced friction disks either of which is designed to be brought into engagement with the friction wheel by axial movements of' said friction member. and means to produce a v'ial'movements of said friction memwer comprising a threaded portion associated with said member, a rotatable element having a threaded portion to cotiperate with the threaded'portion of said friction member,""means 'to rotate said element,relative to the threaded portion of said friction member'to thereby" move the latter axially, and ine'ansto establish a positive connection between said element and the threaded por tion of the friction member whereby rotation of said element will directly rotate the friction member without producing axial movement thereof.

In testimony whereof I afiix my signature, in presenceof two' witnesses.

CHARLES RADIGUER.

Witnesses EMILE BERTRAND, 1 EMIL. KLor-r.

five cents eachgby'addres sing the Commissioner of Patents. Washington, I); 0. 

